»
Broncosaurus Rex

The original Nanotyrannus was a small tyrannosaur, about 15 feet in length. N. acinonyx is the same size, but of lighter build, and as the word acinonyx (cheetah) in its name suggests, it is capable of attaining extremely high speeds in a run, possibly 80 mph or more. With black stripes above and a sandy yellow belly, it is a striking animal in appearance, and its speed enables it to easily run down any of the hypsilophodonts or other small dinosaurs that are its standard prey. Like true...

Solitary or family (1-2 adults, 1-2 young) Challenge Rating Treasure Alignment Advancement Sirenisaurus macrolophus, the big-crested siren lizard, gets its name from two prominent characteristics. The big crest is a weirdly-shaped hollow head crest, which it can use to imitate the calls of any type of duckbilled dinosaur dwelling in Storm Valley, while the siren part comes from the use it makes of this feature to draw unwary duckbills to their doom. This huge carnosaur is a specialized hunter...

Warm forest, hills, mountains, desert, O. arbophagus is a tree-eating descendant of the original Oviraptor. Unlike its ancestor, this creature is an omnivore though it is largely herbivorous, it will eat eggs or rotten flesh when the opportunity presents itself. Eight feet in length, its powerful horny beak enables it to chew and devour any vegetable matter, including wood, thorn bushes, and - in the desert - cacti. Obviously, this means the creature can live in virtually any terrestrial...

18 front sides (-2 size, -1 Dex, +11 natu ral), 11 rear (-2 size, -1 Dex, +4 natural) Solitary or herd (10-100, 50 young) Craspedoceratops gregarium, the gregarious spiny horn-face, is a descendant of the ceratopsian dinosaur Triceratops, but is better protected. Aside from being larger and more powerful, with a maximum length of 40 feet, its frill is a much better defensive device. Not only is it covered with six inch long spines, but it has broadened and expanded to cover the entire front...

Pteranodon pilumgnathus is a lance-jawed descendant of the original flying reptile Pteranodon. Besides being slightly tougher and stronger, its beak is longer and more sharply pointed, having evolved to be used as a weapon against large opponents. It has a thirty foot wingspan and its jaws are toothless. Dark pine green above and sky blue below is its usual coloration, though those which concentrate on catching seafood may be sea green above instead. In both cases, the creature's coloration is...

Liopleurodon gigantis is a gigantic version of the original pliosaur short-necked plesiosaur Liopleurodon of Earth, but whereas the original was 80 feet long with flippers 10 feet long, this monster is from 100-120 feet long with 15-foot flippers. The jaws are likewise 15 feet in length, half again as large as those of its fearsome ancestor. Covered with vertical stripes that alternate between midnight blue and dark purple, this creature is difficult to see when the water is dark, as in the...

Because Storm Valley is just now being explored and exploited, none of the animals listed below have been captured long enough to be domesticated. We have thus not listed DCs for training these beasts. The standard rule from the Handle Animal skill description in the PHB is a DC of 20 the animal's HD. This can be modified at the GM's discretion according to the creature's temperament. As noted in the Broncosaurus Rex Core Rulebook, we treat dinosaurs as type animal, not beast as in the core d20...

Warm forest, hills, desert, or plains Solitary or family 1-2 adults, 1-2 young a descendant of the original dinosaur Chirostenotes a beaked, bipedal omnivore with a short, bumplike horn on its beak, long and powerful clawed forearms, and a surprisingly short tail. Roughly the size of a black bear of Earth, Chirostenotes temnocheirus, the cutting hand, has turned its clawed forearms into lethal weapons, indeed. The lifestyle of this curious animal is a combination of the bear and the ostrich....

Improved grab, swallow whole, pounce Hide 7, Jump 17, Listen 11, Spot 10 Solitary or family 1-2 adults, 1-2 young Dryptosaurus ingens is a vast descendant of the original carnosaur Dryptosaurus, a vicious predator whose powerful hind legs were made for jumping as well as running. A dark green in color, this 30-foot monster likes to hide among the trees and pounce on unsuspecting prey, a practice that plays merry hell with the nerves and morale of those who travel in known dryptosaur country. D....

Listen 10, Spot 14, Wilderness Lore 5 Warm forest, hill, plains, and marsh Allosaurus temnonychus the cutting claw gets its name from the massive foot-long claws on each of its forelimbs. These claws, allied to massively powerful arm muscles - among the most powerful of any carnivorous dinosaur - do terrible damage, even more than the great jaws. Even worse from the standpoint of human explorers is the fact that allosaurus temnonychus is the allosaur species most likely to attack without...

Armor nullification, improved grab, swal- Warm forest, hills, desert, plains, marsh Solitary or family 2 adults and 0-2 young Hyaenasaurus osseophagus, the bone-eating hyena lizard, is a tyrannosaur about the same size as T-rex, but stockier and more specialized. The forearms are more muscular, while the jaw muscles seem grotesquely overdeveloped, being thick and swelling, while the snout is short and thick. Its lifestyle reflects this, and the fact that Hyaenasaurus can live in almost any...

Once the true nature of Storm Valley's contents became known, the Union mounted a massive effort to gain a substantial foothold in the valley, going so far as to use explosives to widen one of the larger mountain passes so ground vehicles could enter. Unfortunately, this intended highway is frequently blocked by landslides, most of which seem to be due to the lightning striking the mountains. Others seem to have been deliberately caused by certain members of the animal life, pterosaurs and...

The characters have at least one skilled aviator or spaceship pilot among them, and they are hired to make an exploration or supply run of some sort into Storm Valley. 2. The characters must lead or accompany a ground convoy entering Storm Valley through a mountain pass, dealing with wildlife, storms, and avalanches natural and artificial alike . 3. A VIP or the relative of one has gone down in his plane or spaceship over Storm Valley, and the characters are hired to get in there - by...

In contrast to the sorry state of affairs at Fort Phil Kearny, the various Confederate outposts in Storm Valley are hanging on quite well, and even thriving. Most of them are considerably smaller than the Union's besieged Gibraltar, making them much less threatening, and even in their pursuit of mining operations they have altered the local landscape much less. Confederate residents approach the wildlife with a live and let live attitude, rather than shooting on sight, an attitude that has...

The first expedition to penetrate Storm Valley and return with some members alive was the Connors Expedition of 2187. Firmly in command was Union captain Jerrold H. Connors, one of the few truly adventurous souls in the Union military. In charge of a mixed party of military personnel, civilian adventurers two-fis-ters , and scientists machinists , he penetrated one of the mountain passes on the southern edge of Storm Valley, which has since been named Connors' Pass in his memory. It was the...

Climb 22 , Jump 6, Hide 6, Listen 4, Solitary, family 2-4 , or pack 5-16 6 Aublysodon orogradior is a mountain walking descendant of the original tyrannosaur relative Aublysodon a relatively small animal roughly 20 feet long with a sharply-pointed snout that gives its head a triangular profile. Its rock-climbing skills are far greater than those of its ancestor. The species has as its natural habitat the entire chain of mountains that rings Storm Valley round, giving it the nickname of the...

Megalochelys thalassos, the huge turtle of the sea, is a descendant of the Mesozoic sea turtle Archelon, but where that turtle was only 12 feet long, this monster is 60 feet long and 40 feet across, with large eyes, a red-rimmed beak that stands out from the dull brown of the rest of the animal, and a backward-sloping shell composed of massive, shingle-like scales. It is an omnivore, feasting on seaweed and dead or injured marine animals, while its protective carapace gives few of the Tempest...

Listen 12, Spot 12, Wilderness Lore 7 Solitary, family 2-4 , or pack 5-10 Deinocheirus gryponychus, the griffin-clawed terrible hand after the mythical eagle lion hybrid , is a descendant of the original Cretaceous carnivore Deinocheirus. This is an ostrich dinosaur expanded to carnosaur dimensions, with a pair of long arms equipped with killing claws so large a foot or more in length that the animal's bite is secondary to them in combat. About as heavy as the largest allosaur, it is longer by...

Solitary, family 2-4 , or pack 5-20 Avimimus struithioides the ostrich-shaped bird mimic is a 15 ft. long descendant of the original dinosaur Avimimus, which was smaller than a man. It is built somewhat like ornitholestes, but with the beaked head of a bird, downy feathers covering its torso, and larger feathers adorning its arms and forming a crest on the back of the head. The Cretasus version has the ordinary bird s beak replaced by the hooked raptoral beak of a bird of prey. Unlike its...

This carnosaur hunts alone, via ambush, or in small family groups. Sometimes, when cover is scarce, one adult will sound the alarm call of a particular species to stampede them in the general direction of the other, which is lying in wait. Although evil, the parents take excellent care of their young, though they often subject dying prey to torture as they teach the young carnosaurs how to kill. The mating season itself is the scene of unimaginable bugling and other cries, as each male tries to...